y Place Mayne vppon ye north side, and from Gwersilt by a little brooke called y Frwe, and from Broughton by a little brook running from a common called Harwood to a place called y Groes faen on ye east side ; and vpon ye west, from ye said common called Nant y Frith to a place vpon ye said common called Maes Maylo' or thereabouts; but ye certaine boundes of ye said towneshipp vppon ye said mountayne or common, they cannott sett downe. While there was mining of coal in the area on a small scale, the late eighteenth century saw an expansion in activity, particularly after the industrialist John "Iron-Mad" Wilkinson purchased Brymbo Hall and began developing its estate, mining coal and ironstone and building an ironworks which was later to become the Brymbo Steelworks. By 1821 there was a total of 41 coal pits on the Brymbo Hall estate alone. In the nineteenth century, a number of larger deep mines were sunk around the area, and the majority of the village of Brymbo was developed as accommodation for the miners and ironworkers. The village itself was constructed on and around the steep sides of Brymbo Hill with views towards the Cheshire Plain, though the area's topography was later to cause problems when the steelworks expanded in 1956: the new parts had to be built on a vast artificial plateau of slag from the furnaces, filling the width of the valley and burying most of the village of Lodge, whose houses were purchased and demolished. Although the steelworks continued in production, many of the area's collieries ran into geological and financial problems by the time of the Great Depression, and the area's last deep mine (the Plas Power pit, near Southsea) closed in 1938, though the Smelt drift mine, west of the village, closed in 1967 (many of the remaining coal deposits were extracted by open-cast mining immediately west of the steelworks during 1972–75). The steelworks itself, after several years of uncertainty, was finally to close in stages between 1990 and 1991, having a severe economic impact on the village. Administrative history In 1844, the old township of Brymbo, previously part of the ecclesiastical parish of Wrexham, became the new ecclesiastical parish of Brymbo. The corresponding civil parish of Brymbo, also based on the old township boundaries, was (as a result of the Local Government Act 1972) replaced